Caffeine Half-life Calculator
source link: https://www.gkbrk.com/wiki/caffeine-halflife/
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Caffeine Half-life Calculator
What is the Half-Life of Caffeine?
The half-life of caffeine can be used to calculate how long coffee will affect you after you drink some. Knowing this can help you adjust your coffee intake in order to improve your sleep schedule, or help you determine how often you should drink caffeine in order to maintain a stable level of caffeine through the day.
The biological half-life of caffeine in typical adults is between 5 to 6 hours. This means if you had 100 grams of caffeine, you would have around 50 grams after 5 hours.
Keep in mind that after the amount becomes very small, it is likely that the body will dispose of it all at once rather than halving the amount forever.
Formula
It is very easy to calculate this with a calculator. To calculate the caffeine you will have 5 hours later, multiply the amount you have with 0.5, and to calculate the amount you will have 1 hour later, multiply the amount by 0.09.
Caffeine Half-Life Calculator
This is a tool to calculate approximately how much caffeine you'll have in your blood based on your intake.
Please note that this is just informative and should not be used for medical or health purposes.
The format of each line is the time you had Caffeine and the amount in milligrams.
00:00 - 0.00 mg
01:00 - 0.00 mg
02:00 - 0.00 mg
03:00 - 0.00 mg
04:00 - 0.00 mg
05:00 - 0.00 mg
06:00 - 0.00 mg
07:00 - 0.00 mg
08:00 - 67.00 mg
09:00 - 59.33 mg
10:00 - 52.54 mg
11:00 - 46.52 mg
12:00 - 41.19 mg
13:00 - 36.48 mg
14:00 - 32.30 mg
15:00 - 28.60 mg
16:00 - 25.33 mg
17:00 - 152.43 mg
18:00 - 134.97 mg
19:00 - 119.52 mg
20:00 - 105.83 mg
21:00 - 93.72 mg
22:00 - 82.98 mg
23:00 - 73.48 mg
00:00 - 65.07 mg
01:00 - 57.62 mg
02:00 - 51.02 mg
03:00 - 45.18 mg
04:00 - 40.01 mg
05:00 - 35.43 mg
06:00 - 31.37 mg
07:00 - 27.78 mg
08:00 - 24.60 mg
09:00 - 21.78 mg
10:00 - 19.29 mg
Citation
If you find this work useful, please cite it as:@article{yaltirakliwikicaffeinehalflife,
title = "Caffeine Half-life Calculator",
author = "Yaltirakli, Gokberk",
journal = "gkbrk.com",
year = "2021",
url = "https://www.gkbrk.com/wiki/caffeine-halflife/"
} Not using BibTeX? Click here for more citation styles. Comments
Comment
Name
Comment by admin
2021-12-01 at 02:39
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Hi everyone! I fixed some problems with the calculator, so the results should be more accurate now. I hadn't touched the calculator in a long time, I cleaned up the internals and made it easier to do updates and fixes in the future.
I am working on an input format that is easier to use. I'd appreciate any feedback or improvements regarding the tool. Feel free to discuss tips and tricks in the comments.
Comment by Ben
2021-10-12 at 21:33
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Thanks for making this! Found out I basically have the equivelent of a whole cup of coffee in me by the time I'm trying to go to bed! Probably need to readjust my habits...
Comment by Guest
2021-09-05 at 11:15
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This is great! Would maybe need a caffeine half time input somewhere, that changes a lot from person to person.
Comment by Chris
2021-08-20 at 18:48
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Anyone know what a "very small amount" means when the body disposes of it?
I should be good to sleep if the calculator says 23mg at bed time right?
Comment by Guest
2021-08-08 at 19:02
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Oh no, now I'm a little worried at how I'm able to sleep after closing shifts with so much caffeine in my system.
Comment by Liam
2021-07-29 at 02:22
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Thank you for this Gokberk, this is excellent. I do have a question - The calculator seems to be working off a 7-8 hour caffeine half-life but as you stated above, the half-life for typical adults is 5-6 hours. Have you factored in absorbtion time? Could you clarify?
Cheers, Liam
Comment by Guest
2021-07-28 at 20:51
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Great visualization. So easy to use.
Comment by Eric Poulin
2021-05-18 at 21:01
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This tool is great. I've been looking for this!
Comment by Adam
2021-04-21 at 19:00
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Great tool, thank you. I think average users would benefit from a more guided input format, but that might not be worth your time.
Comment by Roden
2021-04-14 at 13:47
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Absolutely love this website! Makes me think about my consumtion
Comment by admin
2021-03-10 at 10:32
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Hey Tim! I'm glad you're enjoying it.
If you have any problems, errors or recommendations; feel free to comment about them or send me an email.
Comment by Tim
2021-03-09 at 20:02
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This is an awesome website, I love it!
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